Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

Throwing code 91 help

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Old Apr 20, 2006 | 10:24 PM
  #1  
FuNkDrSpOt's Avatar
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Default Throwing code 91 help

exactly what the title sez. I'm just trying to figure out why my car is throwing it and what normally causes it. Some details that might help:

I have a '97 JDM gsr b18c swapped into my '97 Honda Civic Ex. I have the evap canister from a '98 Civic because mine wouldn't work with the GSR wiring

I remember just before I sent out the engine wiring harness that it had a O2 sensor simulator.

My cat may be suffering from a little bit of blockage.


Thanks!
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Old Apr 20, 2006 | 11:28 PM
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Default Re: Throwing code 91 help (FuNkDrSpOt)

what ecu are you using? there is a number of things that casue that code. could be anything fro ma vacum leak to a bad evap purge soelniod , fuel tank pressure sensor and the list goes on. a jdm ecu wont look for a fuel tank pressure sensor tho
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Old Apr 21, 2006 | 02:00 AM
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Default Re: Throwing code 91 help (B16A2 EJ6)

I'm running a USDM '98 P72 ECU
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Old Apr 21, 2006 | 04:52 AM
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Default Re: Throwing code 91 help (FuNkDrSpOt)

There's your problem. Fuel tank pressure sensor. This is one way to fix it. It does work, I've done it. Just follow directions on first page by John Conner. The other option is a jdm ecu. Your choice.
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Old Apr 21, 2006 | 12:38 PM
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Default Re: Throwing code 91 help (97mini-me)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97mini-me &raquo;</TD></TR><TR><TD CLASS="quote"> Just follow directions on first page by John Conner. </TD></TR></TABLE>

May I have the link please?
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Old Apr 21, 2006 | 06:03 PM
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Default Re: Throwing code 91 help (97mini-me)

bump for that link. I cant find it
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Old Apr 21, 2006 | 09:39 PM
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Default Re: Throwing code 91 help (FuNkDrSpOt)

Sorry. I thought I pasted it in the last post. Here it is. Good luck.

https://honda-tech.com/zerothread?id=767817
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